Antenna



March 24, 1931. l, c, FARBER 7 1,797,949

ANTENNA Filed Nov. 11, 1926 l'gaac O. 1 arer Patented Mar. 24, 1931barren STATES ISAAC- C(FARBER, or DETROIT, MICHIGAN, ASSIGNOR onONE-HALF sTaMrIL, QFDETROIT, MICHIGAN 'ro STANLEY ANTE NA f Applicationfiled No vember 11, 1929. Serial no. 147,723.

' My invention'relates to an antenna adapted to be used in connectionwith radio apparatus and'particu'larly to an antenna for radioreceivingsets. I

The invention has among its other objects the production of devices ofthe kind described which are convenient, compact, efiicient andsatisfactory for use wherever found applicable.

A particular object of the invention is to provide antennae which willbe particularly sensitive so that weak signals may be transmitted to thereceiving set or to other apparatus.

Another particular object of the invention is to provide an antennawhich can be easily erected in a relatively short period of time.

Still another particular object of the invention is to provide anantenna which will transmit a minimum of static to the radio apparatuswith which it is operatively connected.

Many other objects and advantages of the construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosure herein given.

To this end my invention consists in the novel construction, arrangementand combination of parts herein shown and described and moreparticularly pointed out in the claim.

In the drawings, wherein like reference characters indicate like orcorresponding parts:

Fig. 1 is a simple vertical section taken through an antenna embodyingthe invention; and i Fig. 2 is a section taken on line 22 of Fig. 1.

In the drawings, wherein I have shown a preferred embodiment of theinvention. the reference character 10 designates generally a metallicmember onhousing which preferably comprises a metallic conical member 11and ametallic conical member 12 held in spaced relation by anintermediate metallic member or spool 13, the members 11, 12 and 13being preferably formed from sheet metal, although 60 it will be readilyunderstood, as this description progresses, that they may beform'ed 'a'scastings if it is so desired. 1

In the illustrated embodiment of the 'invention, the spool 13 comprisesa cylindrical wall 14: having angular flanges Hand 16 formed integraltherewith at its ends. The-conical member 11 is'pre'ferably solderedprother wise secured'to the outer edge of the *flange'15 as indicated at17 and theconic'al -member 12 is preferably similarly Q se urea ea thejouter edge oftheflan'ge 16{ indicated acre.

- Theflhousifig' I0 is; preferablyieairiewbj a mast whichstagnated-general "jbythe reference chamber 20 "and 'preferably "co'mprises'a metallic rod" 22 having a poilitedend 23- uponjwhich the"conical member 11 is adaptedto rest.'-- Alignedwith the metallic rod 22'and'spa-ced therefrom isa: metallic rod 25 which projects through thelower'end of the conical member 12 and'is rigidly secured 7 to the upperend of a rod 27, themetallic rod 25 being'preferably insulated the rod27. In'order to properlyconnect"the"ad jacent ends of the rods 25 and 27,I provide collars 30 and 31, the collar 31 being mounted directly uponthe upper end of the rod 27, while the collar 30 is threaded upon thelower end of a sleeve 32 which'threads on to the lower end of the rod 25withits upper end fitting snugly against and preferably soldered to thelower portion of the conical member 12. Positioned between'the collars30 and 31 is a disc 33'of any suitable electrical insulation, said discforined with a central upstanding portion 33 which extends into thelower end of the sleeve'32' and against which the lower end of the rod25"abuts'. The collar 30 is' preferably connected to the disc 33 bymeans of screws 35' while thecollar 31 is secured'to the disc 33-byscrews 36. From this connection it will be apparent that the opposedends of the'rods'25and 27 may be quickly detached or secured together asdesired. In the preferred embodiment of the invention, I preferablyprovide a member or button 37 of electrical insulation between theadjacent ends of the rods 22 and 25, the rods being secured to eachother and held in alignment by -a spool 39 which is preferably formed ofwood, but'may be formedef any 100 other suitable electrical insulation.The spool 39 is preferably formed with heads 40 and 41 at its ends and awire 43 is preferably strung between the heads, a plurality of tacks orequivalent devices 44 being employedtosecurethei'wireto the heads.Oneend of" the wire 43 is-preferably soldered'to the flange 15 asindicated at 46, and the other end of the Wire is preferably soldered tothe flange 16 as indicated at 471 As shown, the wire may lead from thesoldered connection 46, over the head 40 and then longitudinall of thespool to the head 41 Where it is secu to the head 41 by one, ofthe tacks4:4. The. wire is then turned upwardly and strung along the spool totheupper headlO Where it is again securedg'to the spool byoneof thetacks 44. The-wire is strung-back 'and forth longitudinally of the spoolin this manner until it extends all around the spool. Ob viously, whenthewire isso-arrangedaround the spool, the free end thereof will bepositioned adiacentithat point an whichthe wire was first secured,toithfl 2Spool; This free end isthe one that isrsecuredf te the'flange:16 in the lus rate smbedimen Q th nven i Secured, toethecylindnical' 141and inatesisah m efp t -01: the equivalent mw fihi 0 .9, nd. of: a lectra conductor 51 V secured. ,ln r practice, the other end 'ofthe'conductor51isysecured-to the antenna binding post of the receiving set or to-theequivalent member of any otherelectrical device with: which it isdesirable to connect the improved: antenna. Of, course, it is readilyunderstood that the binding post 50 need not be connecteddimectly tothewall 14- of the spool13, but may be connected to one of. theflangeslfior- 16, orto one of the conical members 11 and 12, the spool13 and the conical members 11 and: 12 being electrically connected toeach, other.

In practice, I have found that the. above described antenna extremelysensitive when, in operationand that it will collect and transmit, weaksignals to a radio receiving set so that the'signals may be. amplifiedthere to give an audible signal in the telephones, the loud speakingunit, or other device. One advantage of myimproved construction is itscompactnessand' the ease with; which it may beerected uponzany suitablesupport,

Having hus. dmcribed: my invention, it is obvious that various.mmaterial: modifie tions may be madein the same WitihQHii dfi' partingfrom h spirit of.- my iHY LiI QR; ence I.- de- .101 wishte-heunderstoodas limib ngmyse zf: to the exact ern1,..constmction-,arrangement and? combination: of pantsrherein hown and described, oruses. mentioned.

What I claim: as new and desire to: secu-re y Batent is;

ntennacnmprising; a hollow sgQOl two piece; firomeach othendisszrnetallie and a posed longitudinally therein, the lower end of thelower rod extending exteriorly of said member and threadably engaging asleeve, a flange threadably engageable with said sleeve, a second flangecooperating with the first said flangebut insulatedtherefrom, asupporting-{ shaft, said shaft being; engageable with and quicklydetachable om said second flange, a wooden spool secured to saidtrod; inthe. center of saidimembena-plus rality. of pins. disposed in theperiphery of each head of the spool, a wire connecting said pins in theloops substantially parallel with the axis of the member, and the endsof said'wire being soldered to said member and electrical means formingconnection-therewith. v g

In testimony whereof, I have hereunto signed my name. a p y ISAAC C.vFARBER.

